Finding the Fourth Proportional to 64,819.25, 89,458.49 and 36,530.09

Step by Step Solution

1. Step 1: Write the proportion equation
   64,819.25 : 89,458.49 = 36,530.09 : x
2. Step 2: Convert to fraction form
   64,819.25/89,458.49 = 36,530.09/x
3. Step 3: Cross multiply
   64,819.25x = 89,458.49 × 36,530.09
4. Step 4: Simplify right side
   64,819.25x = 3,267,926,508.31
5. Step 5: Solve for x
   x = 3,267,926,508.31/64,819.25
6. Step 6: Final answer
   x = 50,415.99